In the latest sign of a booming economy, human resources officers from some 500 corporations anticipate a massive 66 increase in cash Christmas bonuses, added to a big surge in gifts and parties for American workers.

New data to Secrets from Accounting Principals said the “average bonus” will jump from $1,081 last year to $1,797.

Other findings:

39 percent of companies plan to give employees other perks throughout the year instead of a bonus.

38 percent will give charitable donations in lieu of a bonus, up from 31 percent in 2016.

33 percent of HR managers say that asking a boss for a bonus directly will increase the likelihood of getting a bonus, compared to 15 percent in 2016.